4) If someone is wrong, try to be clear and understanding in your correction, not rude and disrespectful

5) Do not ask for others to do your labs for you, or solicit payment for labs to be done for you.

6) This sub is not intended for tech support questions, you would be better off asking such questions in /r/networking or /r/cisco since this sub is by definition a novice community that is trying to learn networking fundamentals.

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They give you a few practice exams. It's like a whole exam at a time. They give explanations for each answer, right and wrong, which helped me out a lot. I probably wouldn't have passed without them. My first few attempts I failed in the 700s. By the time I was ready to take the test, I scored in the 900s on each exam, and it reflected that on my exam score. Just make sure when you retake the practice exams, you're not just memorizing the question. Even if you did memorize the answer, make sure you can work through it to find why that's the right answer.

I didn't use boson until I had finished Odom's cert guide, but I spent probably a month and a half in between when I first took a practice test and failed and passing them easily. I made sure to not take them too often and left a couple weeks in between taking the same test so I wouldn't memorize the answers.